The '''remoras''' , sometimes called '''suckerfish''', are a family ('''Echeneidae''') of Actinopterygii|ray-finned fish
in the order Perciformes
They grow to long, and their distinctive first dorsal fin
s take the form of a modified oval, sucker-like organ with slat-like structures that open and close to create suction and take a firm hold against the skin of larger marine animals.
By sliding backward, the remora can increase the suction, or it can release itself by swimming forward. Remoras sometimes attach to small boats. They can also attach to other organisms like sharks and turtles of any sort. They swim well on their own, with a sinuous, or curved, motion.